The Intel(R) Platform Controller Hub EG20T I2C Controller - 8817 is a hardware component typically found in Intel-based systems, particularly in embedded or industrial devices. It functions as part of the Platform Controller Hub (PCH) and is responsible for managing communication between the processor and various peripheral devices over the I2C (Inter-Integrated Circuit) bus. This controller helps with tasks like sensor management and communication with low-speed peripherals such as temperature sensors, EEPROM chips, or real-time clocks.

The driver for the Intel Platform Controller Hub EG20T I2C Controller enables Windows to recognize and properly communicate with this controller, allowing the system to use the connected I2C devices.